Regulatable vaporizing burner



March 15, 1938. w. c. ELZE REGULATABLE VAPORIZING BURNER Filed Dec. 11, 1956 2 Sheets-Sheet 1 llll INVENTOR WALTER CELZE ATTORNEY.

March 15, 1938. w Q L 2,111,239

REGULATABLE VAPORIZING BURNER Filed Dec. 11, 1956 Z'Sheets-Sheet 2 Patented Mar. 15, 1938 REGULATABLE vnromzmo. BURNER Walter o. Elze, mat Hts Hauclr Manufacturing jjCo N. Y a corporationof Ne,

Application becemben 111, 12536, Seria No. 115,275

. 6 claims." (cl; The invention relates to burner apparatusfon combustible fluids such, for example, as fuel oil, kerosene, gasoline, etc. i

' It has for an object the provision of a burnerv wherein the effective length of the flame project ed therefrom may readily and instantaneouslyabe controlled, not only between a low and a ihigh setting but also at various intermediatelengths:

and/ or volumes. i

A further object of theinvention resides lin 'a novel burner construction wherebythe amounts of fuel and volume of air for the combustion? thereof are regulatable in accordance with the desired length and/or volum'eof: flame projected by theburner. i l

Still another object of the invention resides in the provision of means for regulating the effective area of vaporization surface to suit the changed amount offuel supply.

area. I 1..

The nature of the invention, however,will

be understood when described in connection. with the accompanying drawings, in which: 4 Fig. 1 shows the novel burner in elevation; and- Fig. 2 is a longitudinal section thereof.

nisms. i Fig. 4 is a transverse section taken on thelin 35. 4-4, Fig. 3, and looking in the direction of the arrows.

Fig. 5 is a vertical section through able for use in the burner apparatus. 1 40 Fig.6 is a fragmentary longitudinal section illustrating a modification.

Referring to the drawings, more particularly Figs. 1 and 2, Ill designates the burner head which is in the nature of a cylindrical or other suitably 45 shaped shell and from the outlet II of which the fiame is projected. Said shell contains the usual vaporizing or preheating coil l2 for the fuel, the convolutions being located along the inner surface of said shell with one end of the convolu- 50 tions connected to the fuel supply through a pipe l3 while the other extends through the usual preheating pan I4 to an orifice member I5.

As shown, the inner end of shell Ill has associated therewith a throat member l6 mounted in 55 the longitudinal axis of the shell and designed Theinventionhas for an object, also, and in connection with the delivery of the fuel, the pro-1 vision of orifice members affording an orificesof fixed area associated with an orifice of variable a combined. fuel supply valve and fixed orifice member suit-:

to receive vaporized fuel,'disch'ar-ged therein from thezorifice member l5,which then ignites to be projected asa fiame through the outlet II. In accordance with the invention, provision is made eolto 'control' the impingement of this flame. upon theiiiconv'olutions of the vaporizing coil l2 as to regulatet thvilparticular area thereof heated by suehkfi'anie. "That is to say, if the fuel delivered fronr'prifice member .15 be increased, the area of coil surface is to' be' correspondingly increased,

and vice'iversa. i l:.'I'0 ithiS end, the-throat itself may be made to reciprocate coaxially withrespect to the coil to deflect-thefiam'e more or less with respect thereto; or, preferably, a nozzle element or hood is mounted about the outlet end of the throat to betadjustable longitudinally thereof. By providing atapered hood, as' shown in Figs. 1 and 2,

'and 'displacing one element radially with respect totheother :so'as to afford an annular outlet space between the same through which air may be drawn into the burner head ll'i, the volume of this air inay b'e-controlled inaccordance with the 'positioniof-th'e hood relative to the throat and .the flame-from the throat caused to impinge on a greater or lesser number of the convolutions of coin-minimaccordance with the position of said hood; 1 i

- In Fig. 6; there-is disclosed a combined hood and throat member 2|, the walls of the hood portion 22 being arranged for juxtaposition to the inner surface of .the coil .23.

-In accordance with the invention, provision is made foryadjustinge the hoodwith reference to thelthroat, or the combined hood and throat, simultaneously with the supply of fuel delivered from the orificemember l5. Said orifice member is'-to this end provided with an orifice 25 in which operates a coaxially disposed needle 25 carried by aspindle 21'. It'is preferred to have the needle 26 somewhat longer than the orifice 25 in, order to secure a cleaning action as said needle reciprocates therein. The reciprocation of said needle is effected from a lever 30 having a handle portion 3| for manual operation of the lever, said lever being pivotally mounted conveniently on the fuel supply pipe l3. Its lower arm is provided with a cam slot 32 in which rides a pin 33 projecting from a boss 36 of the spindle 2?. Intermediate its ends said spindle is threaded as at 35,

said portion operating in the threaded portion 36 of the surrounding sleeve 36' so that as the said lever M is shifted, for example, to the position indicated by the dotted lines, the spindle will be rotated and correspondingly advanced or retracted, and the supply of oil delivered from the orifice decreased or increased.

Lever is connected by a pair of links 40 to the hood member 20 to advance or retract the latter in accordance with the motion of said lever; and the mounting is such that as the hood, for example, is advanced into the shell to thereby decrease the effective vaporizing surface, the

needle valve 26 is correspondingly and simultaneinlet 42 of said valve 4| and its outlet 43 a strainer plug 44 communicating on its external side with the inlet 42 and having an outlet from the strainer in the nature of an orifice 45 of fixed dimensions, said orifice communicating with the port 46 of the valve. There is thus established a definite relationship between the orifice 45 of valve 4| and the orifice 25 of member I5, the latter orifice being considerably larger than the former. I have found that a satisfactory relationship between these orifices is established by making the orifice 45 of a cross-sectional area of 1/64 of an inch and that of the orifice 25 5/64 of an inch.

I claim:

1. A burner comprising an elongated shell open at the front to afford a delivery opening, a vaporizing coil within said shell, a member provided with an orifice for delivery of vaporized fuel into the rear of the shell from said vaporizing coil, movable means to vary the delivery of fuel from said orifice, together with a nozzle element located at the rear of the shell, and means to move the same relatively to the vaporizing coil simultaneously With and from the movement of said means to vary the fuel delivery.

2. A burner comprising an elongated shell open at the front to afford a delivery opening and having at the rear of the shell a throat in the longitudinal axis of the shell, a vaporizing coil loeated in said shell, a stationary nozzle member located behind said throat and provided with an orifice for delivering vaporized fuel thereto from said coil, means to control the delivery of fuel through said orifice, a nozzle element adjustably associated with respect to said throat and the vaporizing coil, and means for changing the relative position of said nozzle elementwith respect to the said throat and coil.

3. A burner comprising an elongated shell open at the front to afford a delivery opening and having at the rear of the shell a throat extending inwardly from its delivery end, a stationary nozzle member located behind said throat and provided with an orifice for delivering vaporized fuel thereto from said coil, means to control the delivery of fuel through said orifice, a nozzle element adjustably associated with respect to said throat and the vaporizing coil, and means for changing the relative position of said nozzle element with respect to the said throat and coil.

4. A burner comprising an elongated shell open at the front to afford a delivery opening and having at the rear of the shell a throat in the longitudinal axis of the shell, a vaporizing coil located in said shell, a stationary nozzle member located behind said throat and provided with an orifice for delivering vaporized fuel thereto from said coil, means to control the delivery of fuel through said orifice, a nozzle element adjustably associated with respect to said throat and the vaporizing coil, and means for changing the relative position of said nozzle element with respect to the said throat and coil and simultaneously therewith the effective area of said orifice.

5. A burner comprising an elongated shell open at the front to afiord a delivery opening and having at the rear of the shell a throat in the longitudinal axis of the shell, a vaporizing coil located in said shell, a stationary nozzle member located behind said throat and provided with orifice for delivering vaporized fuel thereto from said coil, a needle valve operating in said orifice to control its efiective area of outlet, a nozzle element adjustably associated with respect to said throat and the vaporizing coil, means for changing the relative position of said nozzle element with respect to the saidthroat and coil, mechanism connecting said needle valve With the said nozzle element, and manual means associated therewith to actuate said mechanism for increasing the area of outlet of the said orifice and to retract the nozzle element toward its associated throat, and viceversa.

6. A burner comprising an elongated shell open at the front to aiford a delivery opening and having at the rear of the shell a cylindrical throat in the longitudinal axis of the shell, a vaporizing coil located in said shell, a stationary nozzle member located behind said throat and provided with an orifice for delivering vaporized fuel thereto from said coil, a tapered nozzle element mounted about the said throat affording an annular passageway between said throat and nozzle element for the introduction of air received at the inner end of the shell, and means for changing the relative position of said nozzle element with respect to the throat and coil.

WALTER C. ELZE. 

